Hey all, its been over a year since I bought a ton of DIY ingredients. I am hopefully ready to use up the last of my stuff in a third and last major batch. Im a little concerned that some of this stuff may be expired/ unhealthy to use..? I have pre-made saline (using tablets), wizard lab flavors of all kinds, pre-made menthol (using crystals) and nicotine, all over a year old. I think I will be using up the last of my room temp nicotine halfway thru this batch and will have to break out the nicotine that I have stored in my freezer this whole time. My nicotine says retest date- Feb 2015 and the VG says best before Feb 2015. My PG has no expiration date. Has anyone used ingredients that are more than a year old? Hate to have to toss this stuff.